Klein's disease
[医] 克莱因氏病, 家禽伤寒病
🧩 词语组成解析
🗣️ 情景例句
It was a gradual process, involving many factors.
这是个渐进的过程，涉及到方方面面。
Nothing comes from (or of) nothing.
无风不起浪。
Letter
3第三封信